Tank Cleaning
Over the years NESL have perfected the equipment required to move vast quantities of sludge. Today we have a range of specialist equipment available
NESL Mover (Sit & Ride Dozer)
Zero-man entry for tank cleaning operations is rapidly becoming standard practice in all European Countries. The Mover system however is still the fastest way to clean large diameter crude tanks where limited man entry is permitted.
The mover system comprises four major components.
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Mover Vehicle
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Hydraulic Power Pack
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Reels C/W Umbilical
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Lobe Pump
The mover, lobe pump and umbilical are all certified for use in a zone 1 area (ATEX Group II Cat 2) and the power pack is certified for use in a zone 2 area (ATEX Group II Cat 3).
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Manway Cannon
Zero-man entry for tank cleaning & de-sludging operations is rapidly becoming standard practice in all European countries as well as elsewhere. NESL has developed the Manway Cannon for zero entry cleaning operations.
The latest generation of systems come completely installed inside a modified 20-foot standard ISO container divided into two compartments. The first compartment houses the control room that is fully lined and insulated and comes with a combined heating/air conditioning unit. Within the control room are all the controls necessary for controlling the equipment. The second compartment houses the electro-hydraulic power unit permanently installed along with stacked reels for umbilical storage. Manway cannon units and smart nozzles where required are door mounted on lift out storage frames for ease of deployment.
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NES HPWJ ROV Tracked Cannon
The HPWJ ROV has been developed as a means to clean tanks with no man entry. The ROV comes with an insertion ramp which is slid into the 24” manway.
No men are required to enter the tank for insertion or removal of the ROV from the tank and the ROV is simply driven up the ramp and into the tank. Once inside the tank, the ramp can be removed and a supplied roller is placed in the manway to aid the movement of the umbilical through the manway and is a remotely operated dozer controlled by an operator outside of the tank.
The ROV is certified for use in a Zone 1 area (ATEX Group II Cat 2) and the unit includes an anti-static umbilical for extra protection. All electrical components are EX certified and all fluid path material is stainless steel.
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XL- HPWJ ROV Tracked Cannon
This system is available as an add-on for the Manway Cannon system or as a containerized stand-alone system.
The MovCan utilises a combination of the Manway Cannon system and the Mover. Our standard range of ROV's come with a slightly smaller track base which allows for remote insertion into a tank whereas the MovCan comes with the larger, more powerful, mover track.
The MovCan requires a minimum of 2 persons to enter the tank in order to assemble the unit. Assembly is carried out right by the manway and takes approximately 20 minutes.
Once built, the operation of the MovCan is carried out from the Manway Cannon system control desk.
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NESL Weir Tanks
When using any jetting system for the cleaning of large diameter storage tanks the required amount of jetting media can be greatly reduced by using a re-circulation system. We designed the NESL Weir Tank System to work solely with the NESL Cannon System and reduce the waste produced during any tank cleaning operation.
Built into an ISO 20’ standard shipping container and divided into four compartments comprising of one control/pump room and three individual tanks.
All equipment contained in the container is certified for use in a zone 1 area (ATEX Group II Cat 2). Power is supplied to the unit from a customer supplied source. The unit comes equipped with level control and automatic shutdown systems. A small compartment is built into the side of the container. This area contains the level transmitters, alarms and sounders. With the weir tank system, a combination of alarms is incorporated into the design whereby both flashing lights and audible alarms are used.
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